It has only the declaration of its parameters and return value.

只有它的参数和返回值声明。

youdao

Sample without commercial value, only for the Purpose of Custom declaration .

样品无商业价值，仅供报关使用。英语怎么表达？

youdao

Sample without commercial value, only for the Purpose of Custom declaration .

样品无商业价值，仅供报关使用。英语怎么表达？

youdao